A selected summary of Southern California-related business litigation developments during the past week.

Adult Bookstores Sue L.A.: Eleven owners of adult entertainment bookstores and related businesses sued the city of Los Angeles, contending that it is forcing them to comply with severely restrictive zoning laws in an unlawful attempt to put them out of operation. In the federal lawsuit, the companies contend that the city is violating free-speech rights by imposing zoning restrictions that they say make it “virtually impossible for would-be operators to find suitable and legally available locations for such businesses.” One such restriction is that adult businesses cannot be within 500 feet of a residential or agricultural area, school, church or public park. Another prohibits two such businesses from existing within 1,000 feet of each other. The plaintiffs, some of which are New Wave Inc., Library One Inc. and Dash Inc., are seeking an injunction against the city. The city Attorney’s Office had no immediate comment on the suit. (Case No. 91-0689. Filed Feb. 7, 1991).